Which gas causes the greenhouse effect most significantly among human-made emissions?
A
Methane
B
Carbon Dioxide
C
Nitrous Oxide
D
Ozone
Correct Answer: Option B — Carbon Dioxide
Explanation:
Carbon dioxide is the most significant human-made greenhouse gas contributing to the greenhouse effect and global warming. Released primarily through burning fossil fuels deforestation and industrial processes CO2 levels in the atmosphere have risen by over 50% since the Industrial Revolution driving unprecedented climate change.